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Abstract
Tracheobronchial clearance was studied in 17 non-smokers who had suffered from a serologically verified Mycoplasma pneumoniae pneumonia 5–15 months earlier. The subjects inhaled 6 μm teflon particles tagged with 99mTc. The retention of the particles in the lungs was measured for 2 h. The retention after 2 h in this group was significantly higher than in a control group of healthy non-smokers. The results suggest that some impairment persists 5–15 months after the infection or that persons with slow clearance contract a mycoplasma pneumonia more easily than do those with fast clearance.